Exterior surface of the upper housing for a battery charger for a portable radio



FIG. 1 is a top plan view of the exterior surface of the upper housing for a battery charger for a portable radio showing our new design. The broken line showing of the remainder of the battery charger is included for the purpose of illustrating environmental elements only and forms no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a front and upper right perspective view thereof. 

The ornamental design for an exterior surface of the upper housing for a battery charger for a portable radio, as shown and described. 